ARM: dts: exynos: Add entries for sound support on Odroid-XU board

This patch adds device nodes for the AUDSS clock controller,
peripheral DMA 0/1 controllers and the Audio Subsystem I2S controller.
These entries are required for sound support on Odroid-XU board.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>